Working on Fast Electrical Pulse Discharges 15kV 100A 10us Pulses at 10Hz

Sounds like a Magnetron might be what you are seeking.

These folks can probably design/produce a device exactly to your specifications.

http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.600.2906

Hi HiTekRedNek

Application is arc discharge. Thanks for reply.

I've not worked with this type of a device for awhile. When I did we used tube devices (thyratron and trigatron) to switch this combination of voltage and current. There are now a few silicon carbide devices (MOSFET and IGBT) capable of this combination. I recommend you obtain the driver circuit (module?) from the manufacturer of the switch you select. There are proprietary subtleties between switch and driver that can change from fabrication to fabrication.

One thing you will have to cope with is the design of a suitable snubber network at your switch. With the very high speed of making 10 uS (wide?) pulses you will have transmission line reflections happening even if the transmission line is under a meter. (The snubber network might even be able to reuse the reflected energy to recharge some storage capacitance.) Speaking of capacitors, a bank of multiple capacitors in parallel will significantly reduce the ESR so energy can exit the capacitor faster.

Hi redfred:

Thanks for good information. I agree that reflections going to be high and a matching network is must to tune with load conditions and cable impedance. Average power is 200W but peak power going to be ten fold.

I don't know what you are trying to do but your posting looks similar to the surge testing I did a very long time ago. I did 8KV and 15KV work with a Schaffner ESD test gun. That would be a much quicker and lower energy pulse than you want. I also did quite a bit of conducted surge testing with surge generators from Keytek and Velonex.

Most of my conducted test work was done with the Keytek. If I recall correctly (it was about 30 years ago) my most common waveform was 8us rise time and 20 us fall time with an open circuit voltage of about 7-8KV and a short circuit current of about 4KA. I never reconfigured the unit but I recall reading that the waveform shaping components could be reconfigured for several other waveforms. I believe the unit had a large bank of storage capacitors, high energy tolerant passive components for waveform shaping and a vacuum switch (probably mercury wetted or mercury displacement) to fire the surge. The waveform shapes were good enough for compliance testing but may not be controlled well enough for what you need.

What I described does not match what you asked for but it is close enough to suggest that surge generators for compliance testing should be looked at. Between US standards, European standards and other countries there is a lot more going on in the surge compliance testing area than I was exposed to in the past.

Chances are Keytek and Velonex have either gone out of business or been bought and sold several times since then. I don't have any fresh information on sources but I'll bet there are at least several now.

I don't know if maintenance manuals are available for the old units. Chances are all components were fundamental (not custom ICs) and you could probably adjust items in the old schematic to fit your needs and go shopping with medium confidence that you will like your first prototype.

Please come back to CR4 and post photographs and additional information as you progress. We will be interested and might be able to help.

Hi BruceFlorida

I am going to deliver 100W to 200W pulse power into load. Thanks for reply.

I've used Pearson current probes https://www.pearsonelectronics.com/ on a number of occasions. They have worked well for me.

Charles Proteus Steinmetz.

http://www.tfcbooks.com/e-books/transient_phenomena.pdf

This is the textbook for these types of discharges written by the father of the modern understanding of AC and DC electronics.

Hi Deefburger

Thanks for Link to a book on "Transient Phenomena" has great details on basic electrical transient forming elements. Thanks.